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通过在葡萄花前一周、花后一周、生理落果和果实膨大四个关键生长时期,采摘成熟叶的叶柄分析植株大量和微量元素含量,计算元素养分丰缺指数,根据养分丰缺指数指示的养分元素在葡萄体内的丰缺状况,结合目标产量和葡萄营养规律制定营养调节方案,叶面喷施葡萄专用肥。结果表明:叶面施肥可使葡萄增产9%～20%,葡萄可溶性固形物较对照提高4%～14%(绝对值),酸度下降4%～18%,Vc含量有明显的增加,通过计算增加的收益,产投比在1/3.5～1/34.6。所采用的葡萄营养诊断和调节方法增产、改善品质,成本低、方法简便,是葡萄生长期营养管理的一种有效方法。
By analyzing the petioles of mature leaves in the first week, the first week after flowering, the physiological fruit drop and the fruit enlargement, the leaf mass of plantlets and trace elements in the mature leaves were analyzed to calculate the nutrient abundance and deficiency index. According to the nutrient indicated by nutrient abundance index Elements in the grape rich and poor conditions, combined with the target yield and nutrient regulation of nutrition formulate nutrition regulation, foliar spray grape dedicated fertilizer. The results showed that foliar fertilization could increase the yield of grapes by 9% -20%, increase the soluble solids content by 4% -14% (absolute value), decrease the acidity by 4% -18% and increase the Vc content significantly Increased revenue, production ratio of 1 / 3.5 ~ 1 / 34.6. The grape nutrition diagnosis and adjustment methods used for increasing production, improving quality, low cost and simple method are effective methods for nutrition management of grape growth stage.